-ial — relating to, characterized by (affix)

special A1

/ˈspeʃ.əl/ Better, more important, or different from what is usual or normal. M S

social A2

/ˈsoʊ.ʃəl/ Relating to society and the way people live together. M S

official A2

/əˈfɪʃəl/ Approved by or coming from a person in authority. M S

financial B1

/faɪˈnænʃəl/ Relating to money or how money is managed. M S

commercial B1

/kəˈmɝ.ʃəl/ Connected with buying and selling or with business. M S

industrial B1

/ɪnˈdɐs.tɹi.əl/ Relating to industry and the making of goods in factories. M S